James Hardie HardieSmart Boundary boundary wall system, HardieSmart ZeroLot zero lot wall system Design Guide
إعلان
إعلان
HARDIESMART
™
BOUNDARY WALL SYSTEM
HARDIESMART
™
ZEROLOT WALL SYSTEM
Design Guide
Australia | April 2015
Intertenancy Boundary ZeroLot Aged Care
SCOPE
This design guide contains product information, technical specification, construction details and design considerations for HardieSmart
™
Boundary wall system and
HardieSmart ™ ZeroLot wall system when used in residential and multi-residential applications.
IMPORTANT NOTES
1. This design guide must be read in conjunction with the relevant and current James Hardie
®
product install guides and relevant building code and regulations.
2. The specifier or other responsible party for a project must ensure the information in this guide is appropriate for the application you are planning and that you undertake specific design and detailing for areas which fall outside the scope of these specifications.
3. Failure to install, finish or maintain these products in accordance with applicable building codes, regulations, standards and James Hardie’s written application instructions may lead to personal injury, affect system performance, violate local building codes, and void James Hardie’s product warranty.
4. HardieFire
™
Insulation must be used as the frame cavity infill and must be compressed 5mm at a minimum in both vertical and horizontal directions
(I.e. Batt size must be at a minimum 5mm wider and longer than frame stud bay).
Ensure there are no gaps in the installation; please refer to design considerations section.
5. Make sure your information is up to date. When specifying or installing James Hardie
® or you need more information, visit www.jameshardie.com.au or Ask James Hardie ™
products, ensure you have the current manual or guide. If in doubt,
on 13 11 03.
SYSTEM INFORMATION
HARDIESMART ™ BOUNDARY WALL SYSTEM
James Hardie internal lining (table 2)
90mm Timber stud wall
HardieFire
™
insulation
HardieWrap ™ weather barrier
James Hardie external cladding (table 1)
FRL
(minutes)
60/60/60
-/60/60
External
Cladding Type
(see table 1)
Flat sheet
Weatherboards
Planks
90
90
90
90
Timber Stud Size (mm) Maximum stud spacing
Depth Width (mm)
#
90
90
35
^^
45
450~
600
35
^^
45
35 ^^
45
450~
600
450~
600
Min. Wall thickness
(mm)
102
Designed for buildings where external walls are in close proximity to the boundary as well as all bushfire zoned areas that require a Fire Resistance
Level (FRL) of up to 1 hour. This integrated solution will not only satisfy fire requirements but will also provide you with excellent acoustic, energy efficiency and bracing performance.
Please see the design considerations section for suitable James Hardie external cladding and lining products.
Max. Stud height
*
(mm)
Acoustic performance
(Rw)
47
Thermal
Performance
(R-value)
+
2.8
Bracing
Performance
(kN/m)
^
4.0 –10.0
111
105
3,000
3,300
3,000
3,300
3,000
3,300
48
47
3.0
2.8
2.8–6.8
2.8–6.8
HARDIESMART
™
ZEROLOT WALL SYSTEM
HardieFire ™ insulation
HardieWrap
™
weather barrier
EasyLap
™
panels
James Hardie internal lining (table 2)
90mm Timber stud wall
Designed for multi-occupancy projects, specifically, class 1 and 10 buildings where a dual boundary wall solution is required between tenancies. External walls are built at the zero lot boundary line. It has the distinct advantage of enabling fully detached construction in townhouses and terraces, resulting in flexibility of building process.
Please see the design considerations section for suitable James Hardie external lining products
.
FRL
(minutes)
Timber Stud Size (mm)
Depth Width Boundary walls separation
Maximum stud spacing
(mm)ˆ ˆ
Min. Dual
Boundary Wall thickness
(mm)
Max. stud height * (mm)
Acoustic performance per wall (Rw)
Thermal
Performance
(R-value)
+
Bracing
Performance
(kN/m)
^
60/60/60
-/60/60
90
35
^^ 25 –100mm 450~ 234 3000 47 per wall**
2.8 per wall**
4.0 –10.0 per wall**
90 45 600 3,300
TABLE NOTES:
* For increased heights, stud size may need to be increased. Please refer to James Hardie Fire and Acoustically Rated Walls Application Guide for more information.
# Stud spacing is based on a load bearing capacity of 5 kN/stud. The stud spacing may need to be reduced in accordance with wind pressure installation requirements for the selected external cladding product, please refer to the relevant and respective literature for more information. The loadbearing capacities of the timber-framed walls must be determined in accordance with AS1684 ‘Residential timber-framed construction’ and AS1720.1 ‘Timber structures’
+ Thermal value is based on using a single reflective vapour permeable membrane (e.g. HardieWrap
™
weather barrier) with an emissivity of 0.16. The total R-values for common systems are in accordance with AS4859.1:2002 and Amendment 1:2006 Materials for Thermal Insulation of Buildings. Note that the R-value will be reduced in cavities that are ventilated.
** HardieSmart ™ ZeroLot wall system consists of two external boundary walls with minimum offset and construction is commonly staged; therefore, acoustic requirements and above performance values are only measured for each external wall.
^ Additional fastener and design considerations may be required. Refer to James Hardie Structural Bracing Application guide for more information.
~ Stud spacing may be increased to 600mm centres with a reduced loadbearing capacity of 3.4 kN/stud. Please note that if specifying 600mm centres, cutting of HardieFire
™
Insulation will be required as sizes have been optimised for 45mm studs at 600mm. It is recommended to install 560mm batts horizontally to minimise cutting. Ensure a 5mm compression throughout and no gaps.
^^ A larger minimum timber stud size may be required, please refer to framing section under design considerations.
ACCESSORIES
Please refer to the respective cladding and lining products for required accessories. In addition, the following components may be required.
PROVIDED BY JAMES HARDIE
®
HardieFire
™
Insulation
Mineral wool insulation specifically designed for use in fire applications with HardieSmart
™ systems.
Batt Sizes:
1160 x 560 x 85 mm (for 600mm spaced timber studs, 45mm wide)
1160 x 420 x 85mm (for 450mm spaced timber studs, 35 or 45mm wide)
No. of pieces:
5 per pack
Pack weight:
22.1 Kg approx.
(for 560 x 1160 x 85mm)
16.6 Kg approx.
(for 420 x 1160 x 85mm)
Product
Code:
305790 (for 560 x 1160 x 85mm)
305791 (for 420 x 1160 x 85mm)
80 Kg/m 3
Density:
R Value:
Coverage per pack:
2.5 m 2 .K/W
3.6 m
2
(for 560 x 1160 x 85mm)
2.7 m 2 (for 420 x 1160 x 85mm)
All dimensions and masses provided are approximate only and subject to manufacturing tolerances. Masses are based on equilibrium moisture content of product.
NOT PROVIDED BY JAMES HARDIE
®
James Hardie recommends the following products for use in conjunction with
HardieSmart
™
Systems. James Hardie does not supply these products. Please contact the component manufacturer for information on their warranties and further information on their products.
Fire and Acoustically rated sealant:
Suitable and tested sealant for fire- and acoustically-rated construction and HardieSmart
™
Systems. Used to fill control joints, penetrations and any wall gaps to maintain acoustic and fire integrity. The sealant may need to be water resistant if required in a wet area.
Reciprocating Saw or Hand Saw:
Used to cut HardieFire
™
Insulation when required.
Refer to safety and handling section.
Fire Resisting Mineral Wool:
Used to maintain FRL of the selected wall system at junctions where relevant. Please see construction details for applications. It must be installed in accordance with manufacturer recommendations.
SYSTEM PERFORMANCE
1. FIRE RESISTANCE LEVEL (FRL):
The fire resistance level (FRL) test reports and Letters of Opinion in this guide have been certified by the
CSIRO Division of Building Construction and Engineering and the Building
Research Association of New Zealand (BRANZ). Fire resistance testing to determine the FRL of a wall (in the form of a specimen) has been conducted to the Australian Standard AS 1530 Part 4: ‘Fire Resistance Tests of Elements of Building Construction’. The standard follows the basic principles and provisions contained in ISO-834 ‘Fire Resistance Tests – Elements of Building
Construction’. For more information on fire performance in buildings, please refer to James Hardie Fire and Acoustically rated walls Application Guide.
2. ACOUSTIC PERFORMANCE:
The acoustic test reports in this manual have been certified by the RMIT. Systems used in building construction are tested under laboratory conditions to establish their sound insulation characteristics. The method of measurement is described in AS1191
‘Acoustics – method for laboratory measurement of airborne sound transmission loss of building partitions’. 3.5.2 Acoustic modelling. Based on the test results indicated above, acoustic modelling for HardieSmart ™ wall systems was undertaken by SLR Acoustics Pty Ltd. For more information on acoustic performance in buildings, please refer to James Hardie Fire and Acoustically rated walls Application Guide.
3.
THERMAL PERFORMANCE:
This guide outlines a range of certified modelled total R-values for HardieSmart
™
wall systems. This information will assist in both satisfying the minimum deemed to satisfy Building Code of
Australia (BCA) thermal resistance requirements or used with verification software tools across Australia.
4. BRACING PERFORMANCE:
To achieve the necessary bracing requirements, this guide must be read in conjunction with James Hardie
Structural Bracing Application Guide. It has been designed in accordance with AS 1684 ‘Residential Timber Framed Construction’ (‘the code’), and gives fixing details and bracing capacity for James Hardie products.
All design capacities quoted are Ultimate Limit State (ULS) figures and have been certified by consulting engineers, Cardno (NSW) Pty Ltd.
DESIGN CONSIDERATIONS
1. EXTERNAL CLADDING:
Any James Hardie ® external cladding products that are 6mm or thicker (see Table 1) may be used in HardieSmart ™
Boundary wall systems. Installation of the selected product must be in strict accordance with the respective, current installation manual. Please refer to www.jameshardie.com.au for more information.
PAGE 2 OF 12 | HARDIESMART
™
BOUNDARY AND ZEROLOT WALLS – DESIGN GUIDE
Table 1
External Cladding Type James Hardie Product name
Flat sheets or panels
Weatherboards
EasyLap ™
HardieFlex
panels
Panelclad
™
sheets
HardieTex
™
base sheets
Scyon ™
™ sheets (6mm)
Axon ™ cladding
Scyon
™
Linea
™
weatherboards
Hardieplank ™ weatherboards
Primeline
™
weatherboards (Newport and Summit)
Planks
Façade and Cavity Systems
Scyon ™ Stria ™ Cladding
Primeline
™
weatherboards (Heritage and Chamfer)
Exotec
®
façade panel
Scyon
™
Matrix
™
cladding
ComTex ® façade panel
2.
HARDIEWRAP
™
WEATHER BARRIER:
Behind the selected cladding product, HardieWrap
™
weather barrier must be installed in accordance with the current data sheet and respective cladding product manual. In hot humid areas of Australia, HardieWrap ™ weather barrier may not be suitable, refer to the building designer for a suitable membrane, HardieWrap
™
weather barrier datasheet or Ask James Hardie
®
on 13 11 03 for more information.
3.
HARDIEFIRE
™
INSULATION:
It must be used as the frame cavity infill and must be compressed 5mm at a minimum in both vertical and horizontal directions (i.e. Batt size must be at a minimum 5mm wider and longer than frame stud bay). Ensure there are no gaps in the installation. Please refer to figure 1 for more information on installation. If cutting is required, it is recommended to cut outdoors. If indoors, please ensure that workspace is properly ventilated and HEPA vacuums/dust extractors are used.
a. Position cutting station so wind will blow dust away from the user or others in working area.
b. Use one of the following methods based on the required cutting rate:
i. Reciprocating Saw
ii. Mechanical Hand Saw
4.
INTERNAL LINING:
Any James Hardie
®
internal lining 6mm or thicker listed in Table 2 may be used or any of the external cladding products listed in
Table 1. Installation of the selected product must be in strict accordance with the respective and current installation manual.
NOTE: If Architectural ™ Invibe or Inraw ™ panels are used, 6mm Villaboard ® lining must be fixed behind these panels to maintain fire rating. Villaboard lining must be fixed in accordance with the installation guide current at the time of installation.
Table 2
James Hardie Product name
Villaboard
®
lining (6, 9 or 12mm)
Versilux
®
lining (6 or 9mm)
HardieGroove
™
lining
Pineridge
®
lining
5. FRAMING
:
■
Material type: Dry seasoned dry timber only. ‘Timber used for house construction must have the level of durability appropriate for the relevant climate and expected service life. Reference AS1684.2 ‘Residential Timber
Framed Construction’. Steel frames are not suitable.
■
Minimum stud width: Studs that are 35mm in width may be used in accordance to system information section; however, depending on the
James Hardie external cladding and internal lining product selected, where sheet jointing is required; the minimum stud width may be 45mm so as to properly accommodate the joint.
■
Stud spacing: 600mm maximum. Check whether the selected external cladding and/or internal lining require closer stud spacing for your site wind pressures and tile weight (only for tiled walls). It must be noted that HardieFire
™
Insulation sizes have been optimised for 45mm studs at 600mm and 35mm studs at 450mm centres, cutting may be required otherwise.
■
Nogging: 1350mm maximum centres.
6.
SLAB AND FOOTINGS:
The slab and footings on which the building is situated must comply with AS 2870 ‘Residential slabs and footings –
Construction’ and the requirements of the Building Code of Australia (BCA).
7.
GROUND CLEARANCES:
Install James Hardie external cladding with a minimum 150mm clearance to the earth on the exterior of the building or in accordance with local building codes if greater than 150mm is required.
Maintain a minimum 50mm clearance between James Hardie external cladding and roofs, decks, paths, steps and driveways.
8.
TERMITE PROTECTION:
The BCA specifies the requirements for termite barriers; please refer to third party companies for suitable termite barrier mechanisms. Where the exposed slab edge is used as part of the termite barrier system, a minimum of 75mm of the exposed slab edge must be visible to permit ready detection of termite entry. Adjacent finished grade must slope away from the building in accordance with local building codes, typically a minimum slope of 50mm minimum over the first metre.
Do not install external cladding such that it may remain in contact with standing water.
9. FIRE AND ACOUSTICALLY RATED SEALANT:
Use a tested and warranted fire sealant in junctions and gaps as indicated in construction details to maintain fire and acoustic integrity of the system. E.g. Bostik FireBan One.
10.
FASTENER TYPE:
Brad nail and/or adhesive fixing are NOT recommended in fire and acoustically rated systems. Please refer to the respective James
Hardie product for alternative fixing methods.
11.
PENETRATIONS:
All penetrations require careful and comprehensive treatment to maintain Fire Resistance Level (FRL) of the system; therefore, they should be avoided. Generally, dealing with penetrations in fire and acoustically rated systems can be avoided by placing them in external non-fire rated systems, or by building false walls or box/bulkheads, creating pockets in the fire rated element. For more information contact James Hardie Engineering
Solutions Team on 13 11 03.
12.
PAINT/TEXTURE:
Refer to the respective James Hardie internal lining and external cladding installation manual for coating requirements. Please refer to coating manufacturer for suitability and specific requirements.
When installing Villaboard ® lining in areas that are not exposed and there is no concern of aesthetics such as roof cavities, James Hardie
™
Top coat and finishing coatings are not required to maintain FRL and acoustic performance. However, the joints must be sealed with an appropriate fire and acoustically rated sealant or alternatively James Hardie suitable paper tape.
™ Base Coat in combination with
SAFETY AND HANDLING
For information refer to the respective products installation guide or data sheet and MSDS at www.jameshardie.com.au or www.accel.com.au; and the safe workplace government authority in your state.
DESIGN TOOLS
James Hardie has developed online tools for easy specification. Please refer to www.accel.com.au for more information on estimation tools, CAD details, system selector, site specific recommendations and more.
STANDARD CONSTRUCTION DETAILS
CONSTRUCTION DETAILS
HardieFire
™
James Hardie
(see table 2)
INTERIOR
James Hardie internal lining
Structural flooring solid timber batten to maintain FRL
Gap sealed with fire and acoustic sealant
James Hardie
(see table 2) insulation
™ external cladding
(see table 1)
HardieWrap
™ weather barrier
HardieFire
™ insulation
Concrete Slab
(see table 1)
® external cladding
James Hardie
® external cladding
(see table 2)
Fire rated sealant
(see table 2) insulation
™ ™ weather barrier insulation
™ metal flashing with min. 75mm upstand metal flashing with min. 75mm upstand
6mm gap to allow moisture to escape
Structural flooring
Floor Joist
Continuous concrete strip footing
Continuous concrete strip footing
Ant cap
Ant cap
James Hardie
(see table 1)
EXTERIOR
HardieWrap
™
FIGURE 1 HARDIESMART
™
BOUNDARY WALL SYSTEM
BASE DETAILS
90mm timber frame
James Hardie internal lining
(see table 2)
Gap sealed with fire and acoustic sealant
James Hardie external cladding
(see table 1)
HardieFire
™ insulation
HardieWrap
™ weather barrier
Damp proof course
20-50mm
Concrete Slab
Suitable ground clearance
FIGURE 4A EXTERNAL WALL BASE TO SUSPENDED GROUND FLOOR
OPTION 2
James Hardie
® external cladding
(see table 1)
HardieWrap
™
® external cladding insulation
™ ™ weather barrier
HardieFire
™ metal flashing with min. 75mm upstand and 10mm overhang min. 75mm upstand and 10mm overhang
James Hardie internal lining
(see table 2)
James Hardie internal lining
Structural flooring
Floor Joist
45mm timber
Ant cap
200x50mm H4 treated timber plinth.
*Refer to timber
supplier for
suitability
*Refer to timber
supplier for
suitability pier or stump support between piers or stump piers or stump
FIGURE 2 EXTERNAL WALL BASE TO SLAB
FIGURE 4B EXTERNAL WALL BASE TO SUSPENDED GROUND FLOOR
OPTION 3
HARDIESMART
™
BOUNDARY AND ZEROLOT WALLS – DESIGN GUIDE | PAGE 3 OF 12
FLOOR JUNCTIONS
James Hardie internal lining (see table 2)
6mm gap sealed with fire and acoustic sealant
Structural flooring
Sacrificial 45mm solid timber batten to maintain FRL
HardieFire
™ insulation
Corrosion resistant flashing suitable for the selected James
Hardie cladding
James Hardie external cladding
(see table 1)
HardieWrap
™ weather barrier
Ceiling lining
James Hardie internal lining
6mm gap sealed with fire and acoustic sealant
HardieFire insulation
™
FIGURE 5 EXTERNAL BOUNDARY WALL WITH UPPER STOREY FLOOR 1 insulation
™
6mm gap sealed with fire and acoustic sealant
Structural flooring solid timber batten to maintain FRL with fire and acoustic sealant resistant flashing suitable for the selected James
Hardie cladding external cladding
(see table 1)
HardieWrap
™ weather barrier
HardieFire
™ insulation
FIGURE 6 EXTERNAL BOUNDARY WALL WITH UPPER STOREY FLOOR
OPTION 2
ROOF JUNCTIONS
a 60 minute FRL to only extend to the lining for class 1 and 10 buildings.
roofing installed in accordance with manufacturing with suitable sarking
Ceiling lining
James Hardie
(see table 1)
HardieFire
™ insulation
James Hardie internal lining
(see table 2)
HardieWrap
™ weather barrier
James Hardie eaves lining
FIGURE 7 EXTERNAL BOUNDARY WALL TO JAMES HARDIE EAVE LINING
OPTION 1 a 60 minute FRL to only extend to the lining for class 1 and 10 buildings.
Metal or tiled roofing installed in accordance with suitable sarking
Ceiling lining
HardieFire
™ insulation
James Hardie
(see table 2)
HardieWrap
™ weather barrier external cladding
(see table 1)
Non-combustible fascia
FIGURE 8 EXTERNAL BOUNDARY WALL TO JAMES HARDIE EAVE LINING
(RAKED) OPTION 2
Fill with fire resistant mineral
Insulation not suitable)
™
Metal or tiled roofing installed in accordance with suitable sarking
Ceiling lining
Seal with fire and acoustic sealant insulation
™ internal lining
(see table 2)
HardieWrap
™
No eave lining
Non-combustible fascia
James Hardie external cladding (see table 1)
FIGURE 9 EXTERNAL BOUNDARY WALL TO ROOF WITH NO EAVE LINING
Metal or tiled roofing installed in accordance with suitable sarking
Villaboard
® lining
Hardie cladding resistant metal capping with fall in accordance with manufacturer
HardieFire
™ insulation
HardieWrap
™ weather barrier
Ceiling lining and acoustic sealant
James Hardie lining
(see table 2) external cladding
(see table 1)
FIGURE 10 EXTERNAL BOUNDARY WALL TO PARAPET ROOF
PAGE 4 OF 12 | HARDIESMART
™
BOUNDARY AND ZEROLOT WALLS – DESIGN GUIDE
Villaboard
®
lining
HardieFire
™
Insulation
FIGURE 11 EXTERNAL BOUNDARY WALL TO PARAPET ROOF WITH
PARALLEL ROOF TRUSS.
6mm Villaboard
®
lining
45mm solid pole plate
HardieWrap
™ weather barrier
WALL JUNCTIONS
external cladding
(see table 1)
HardieWrap
™ weather barrier
6mm gap sealed acoustic sealant
Non- fire rated internal lining timber batten to maintain FRL insulation
™ with fire and acoustic sealant
James Hardie
(see table 2)
FIGURE 13 NON-FIRE RATED INTERSECTING FIRE-RATED BOUNDARY WALL
WINDOW DETAILS
James Hardie
(see table 1)
HardieWrap
™ weather barrier
Suitable corrossion resistant flashing
Internal window trim suitable fire window with FRL of -/60/-
Sealed continuously acoustic sealant suitable fire and acoustic sealant
HardieFire insulation
™
Internal window trim
James Hardie
(see tabble 2)
FIGURE 14 FIRE-RATED EXTERNAL WINDOW AT BOUNDARY
(GUIDE ONLY, PLEASE REFER TO WINDOW MANUFACTURER)
HardieFire
™
Insulation
FIGURE 12 EXTERNAL BOUNDARY WALL TO PARAPET ROOF WITH
PERPENDICULAR ROOF TRUSSES
HARDIESMART
™
BOUNDARY AND ZEROLOT WALLS – DESIGN GUIDE | PAGE 5 OF 12
PENETRATIONS
James Hardie
(see table 2)
Switch plate
HardieWrap
™ weather barrier external) switchbox as manufacturer
Switch plate bracket
Gap sealed with fire sealant e.g.
Fireblock
™ external cladding
(see table 1)
James Hardie
Mineral Wool
FIGURE 15 FIRE-RATED SWITCH PLATE OR GPO ELEVATION
90mm timber frame
Suitable wet area sealant
James Hardie
(see table 1) insulation
™ horizontal support for taps
HardieWrap
™ weather barrier recommended waterproofing membrane (for wet areas)
® lining
20 mm vertical batten
FIGURE 16 FIRE-RATED WALL PLUMBING PIPE PENETRATION – SECTION timber frame
HardieWrap
™ weather barrier
James Hardie external cladding
20 mm batten
Suitable wet area sealant
20 mm batten
HardieFire
™ insulation support for taps
6mm
Villaboard
® lining
FIGURE 17 FIRE-RATED WALL PLUMBING PIPE PENETRATION – PLAN
PAGE 6 OF 12 | HARDIESMART
™
BOUNDARY AND ZEROLOT WALLS – DESIGN GUIDE
CONSTRUCTION DETAILS
(WITH SITE ACCESS RESTRICTION):
Installing boundary wall systems in sites with access restriction requires building frame modules in-situ or prefabricated by a specialised truss and frame manufacturer. The below information is provided as a guide to assist in the assembly and detailing of the proposed system. The designer must ensure that any detail that falls outside of the scope of this specification complies with the relevant codes and manufacturer specifications.
For further assistance and site support, please contact James Hardie on 13 11 03.
SYSTEM COMPONENTS AND ACCESSORIES
The components required for HardieSmart™ ZeroLot and Boundary Wall Systems must be staged during construction. Typically, a set of materials are required at framing stage and others at lining stage. The below lists do not consider all elements required for construction such as nails, adhesives, etc. Refer to accessory section for more information.
FRAMING STAGE: Involves building wall modules. These are composed of the following components:
■
■
■
■
■
Timber frame in accordance with framing section in this guide
HardieWrap™ weather barrier
■
■
EasyLap™ panels
Corrosion resistant z flashing for floor junctions (James Hardie h flashing not suitable), please see Figure 18.
James Hardie™ 50mm wide Foam Back Sealing Tape
■
NOTE: A small portion of HardieFire™ Insulation may be required at framing stage for roof cavity, see Step 6 for more information.
LINING STAGE:
HardieFire™ Insulation
James Hardie Internal Lining
Fire and Acoustically Rated Joint Sealant (to seal junctions)
INSTALLATION
STEP 1: SETTING OUT SLAB BASE OR BASE
■
Provide Slab Separation: When setting slabs, the designer must ensure slab separation between dwellings (due to detached construction). This may be achieved by the use of packing or separating material typically used at control joints. Refer to Figure 19.
■
Install Termite Management: Due to the access restriction at zero lot boundary walls, a suitable and certified termite management mechanism or reticulation system (in accordance with NCC requirements) must be installed at the boundary slab, see Figure 19.
Damp course
Concrete slab timber frame
EasyLap
™
Panels
20-50mm accordance with manufacturer
100mm
10mm
Corrosion material
25mm
0.5-1.2mm
FIGURE 18 ZERO LOT FLOOR JUNCTION FLASHING PROFILE
ZERO LOT DESIGN CONSIDERATIONS:
■
Side boundary wall setback: HardieSmart™ ZeroLot wall system specifies a minimum setback of 12.5mm from the boundary line when capped and installed in accordance with this guide.
When the HardieSmart™ Boundary wall system is not capped and it is built against an existing structure, a minimum setback of 500mm is recommended to allow for paint maintenance in accordance with the coating manufacturer’s instructions.
Please note that council, state or other regulations may apply in your development and specify larger setbacks, height, width and other design criteria. Additionally, confirmation in writing in the form of a statutory declaration from the registered owner of the adjoining premises may be required to be submitted to demonstrate compliance. The designer/specifier must ensure that the system is fit for purpose and complies with the relevant requirements and regulations.
separation in accordance with building requirements
FIGURE 19 ZERO LOT CONCRETE SLAB BASE DETAIL
STEP 2: DETERMINING BOUNDARY WALL MODULE SIZES
■
■
■
Ensure you have selected the optimum lengths and heights of wall modules.
This is critical to achieve optimum speed of construction and ease of installation.
Wall modules height and length should not exceed 3.6m and 6m, respectively.
To determine wall module dimensions, you must consider the following:
EasyLap™ panel sizes
Boundary wall length and height (wall module must not exceed storey height)
Weight of the wall module, please refer to Tables 3 and 4.
Table 3:
Weight of Zero Lot Wall Modules based on stud frame at 600mm centres (Kg)
Module width (mm)
1200 2400 3600 4800
Module
Height
(mm)
2.4
2.7
41.5
46.0
81.3
90.3
121.0
134.6
160.8
178.9
3
50.6
99.4
148.2
197.1
3.2
53.6
105.5
157.3
209.2
Table 4:
Weight of Zero Lot Wall Modules based on stud frame at 450mm centres (Kg)
Module
Height
(mm)
2.4
2.7
3
3.2
Module width (mm)
900 1800
32.4
63.1
35.8
39.2
41.5
69.9
76.7
81.3
2700
93.8
104.0
114.2
121.0
3600
124.5
138.1
151.7
160.8
6000
200.6
223.2
245.9
261.0
4500
155.2
172.2
189.2
200.6
Table 3 & 4 NOTE: Please note that masses and dimensions are approximate only. These are subjected to manufacturing tolerances and other factors such as moisture content. The weights listed below have been used in the values set out in tables 3 and 4. It does not consider flashings, damp-proof course and any other elements not listed below:
■
■
■
Timber frame: 429 Kg/m3. Assuming density of softwood traditional pine timber studs with a moisture content of 16.2%, which may vary.
HardieWrap™ weather barrier: 0.11Kg/m2
EasyLap™ panels: 12 Kg/m2
HARDIESMART
™
BOUNDARY AND ZEROLOT WALLS – DESIGN GUIDE | PAGE 7 OF 12
STEP 3: BUILDING WALL FRAMES
When building the frame modules on ground, the following design considerations must be taken into consideration:
1 Wall Junctions: At wall partition junctions, allow for an additional 45mm solid timber batten to maintain FRL.
Damp proof course
STEP 4: CLADDING WALL FRAMES ON GROUND
When building the walls on or off site, the layout displayed in Figure 22 and 23 is recommended.
Install HardieWrap™ weather barrier as per the current data sheet. It is recommended to fix with a suitable hammer tacker and staples.
Please note that a 150mm overhang from edge is required when jointing wall modules, see Figure 23.
2. Install James Hardie™ 50mm wide Foam Back Sealing Tape where shiplaps are located. Please see Figure 23.
3. Install EasyLap™ panels in accordance with the current installation manual with a 22.5mm offset at jointing ends and flush at corners as indicated in
Figures 22 and 23 below.
Place cut sheets at ends. Fix EasyLap
™ panels flush with frame at wall ends section detail on wall junction timber block to maintain
FRL at wall junctions
FIGURE 20 INERSECTING WALLS TREATMENT
2 Levelling: Once pre-built, place the frame into position to check levelling.
Ensure frame module is levelled prior to Step 4.
FIGURE 22 BOUNDARY WALL MODULES
James Hardie
™
22.5mm
(not required
Overhang end 20-50mm
EasyLap
™ panels
22.5mm
EasyLap
™ overhang
(not required for end of wall) at position before fixing
EasyLap
™
Panels
FIGURE 21 LEVELLING FRAME MODULES
90mm timber frame
HardieWrap
™
weather barrier with 150mm overhang (not required for end of wall)
FIGURE 23 WALL MODULE LAYOUT
STEP 5: COATING WALL MODULES.
Roll on an acrylic exterior paint finish to all wall modules. Where EasyLap™ panels are not exposed to the exterior weather elements, a minimum of one coat of an exterior grade acrylic paint is to be applied; otherwise, two coats minimum must be applied in accordance with the EasyLap™ panel installation manual. Please refer to design considerations section for more information.
FIGURE 24 COATING WALL MODULES
PAGE 8 OF 12 | HARDIESMART
™
BOUNDARY AND ZEROLOT WALLS – DESIGN GUIDE
STEP 6: LIFTING AND FIXING WALL MODULES
Once the slab and levelling has been set out, wall modules may be placed into position. They may be lifted manually or by crane (this will depend on the module size and weight). If craning modules into position, the lifting points and connections must be designed by the relevant specialist in accordance with the relevant codes and practices.
LIFTING FIRST WALL MODULE
into position. These may be craned into position.
TREATING FLOOR JUNCTION
There are two recommended options for treatment of floor junctions, please see below:
OPTION 1: CONTINUOUS WALL
6mm gap sealed acoustic sealant
James Hardie internal lining insulation
™
Structural flooring
Sacrificial
45mm solid timber batten to maintain FRL
Corrosion
(see Figure 18)
EasyLap
™
panel
FIGURE 25 LIFTING AND ANCHORING ZERO LOT WALL MODULES
PLACING TEMPORARY BRACING
temporary bracing as required
Anchor frame to slab in accordance with frame design
6mm gap sealed with fire and acoustic sealant
HardieWrap
™ weather barrier
25mm separation between walls
FIGURE 28 EXTERNAL BOUNDARY WALL WITH UPPER STOREY FLOOR
(CONTINUOUS)
OPTION 2: DISCONTINUOUS WALL
insulation
™ with fire and acoustic sealant resistant flashing
(see Figure 18)
FIGURE 26 PLACING TEMPORARY BRACING
JOINTING WALL MODULES
HardieWrap
™ barrier with 150mm overhang
EasyLap
™
panels
Sacrificial 45mm to maintain FRL
Ceiling lining
EasyLap
™
panel
HardieWrap
™ weather barrier
90mm timber frame accordance with framing manufacturer
FIGURE 27 VERTICAL JOINT OF WALL MODULES
Tape HardieWrap
™ ends with suitable tape
James Hardie internal lining with fire and acoustic sealant
25mm separation between walls
FIGURE 29 EXTERNAL BOUNDARY WALL WITH UPPER STOREY FLOOR
(DISCONTINUOUS)
BUILDING UPPER STOREY
For the Upper Storey, you must add a ‘Z’ corrosion resistant flashing with a profile to match the profile depicted in Figure 18. To lift wall modules, you must follow the same procedure as per lower storey wall modules.
Once anchored and fixed in position, fix temporary bracing.
20-50mm
Lift wall modules and fix into position. These may be craned into position. Fix bottom plate frame manufacturer.
FIGURE 30 FIXING UPPER STOREY WALL MODULES
HARDIESMART
™
BOUNDARY AND ZEROLOT WALLS – DESIGN GUIDE | PAGE 9 OF 12
TREATING ROOF JUNCTION
Please note that based on your selected roof option, the top EasyLap™ panel may require to be overhung. Additionally, HardieFire™ insulation may be required for the roof cavity at the framing stage (only the roof cavity section, not entire wall).
sarking installed in accordance with manufacturer to fully protect lining
®
Suitable corrosion resistant parapet capping fall
HardiWrap
™ weather barrier resistant metal
75mm upstand
EasyLap
™ panels insulation
™
James Hardie internal lining installed in accordance with manufacturer
Ceiling Joists parallel
Ceiling lining
Trimmer for perimeter support
Boundary line
FIGURE 31 DUAL ZEROLOT EXTENDED PARAPET ROOF JUNCTION WITH
PARALLEL ROOF TRUSSES with sarking installed manufacturer
James Hardie internal lining
45mm solid pole plate
HardieWrap
™ weather barrier
Easy Lap™ Panels
Insulation
™
Boundary line
FIGURE 33 DUAL ZEROLOT EXTENDED PARAPET ROOF JUNCTION WITH
PERPENDICULAR ROOF TRUSSES sarking installed in accordance with manufacturer
Suitable corrosion resistant parapet capping
6mm lining
® resistant mineral
FRL of wall system
EasyLap
™
panels
HardieWrap
™ lining
®
45mm solid pole plate mineral wool to maintain
FRL of wall system
HardieWrap
™ weather barrier
Easy Lap™ Panels
Timber batten for perimeter support
Insulation
™
James Hardie internal lining
Boundary line
FIGURE 32 DUAL ZEROLOT ROOF JUNCTION WITH PARALLEL ROOF
TRUSSES
James Hardie
Internal lining
Insulation
™
Boundary line
FIGURE 34 DUAL ZEROLOT FRAMED ROOF JUNCTION
FINISHING WALL ENDS
James Hardie internal lining
HardieFire
™
Insulation
HardiFire
Insulation
™
HardieWrap
™
Weather Barrier
James Hardie internal lining
EasyLap
™
Panels with fire and acoustic sealant
45mm timber batten
PAGE 10 OF 12 | HARDIESMART
™
BOUNDARY AND ZEROLOT WALLS – DESIGN GUIDE external resistant flashing
Scyon
™
Boundary line
Axent
™
FIGURE 35 EXTERNAL NON-FIRE-RATED WALL ABUTTING TO
HARDIESMART
™
ZEROLOT WALL SYSTEM
trim
EasyLap
™
Panels
HardieWrap
™
Weather Barrier
Internal lining
HardieFire
™
6mm gap sealed with
®
FireBan One
insulation
45mm solid timber
FRL
Boundary line
Vapour permeable membrane
Damp-proof course
Suitable exterior foam packer compressed in gap to seal cavity
FIGURE 36 EXTERNAL BRICK VENEER WALL ABUTTING TO HARDIESMART
™
ZEROLOT WALL SYSTEM
STEP 7: FIXING HARDIEFIRE™ INSULATION AND
JAMES HARDIE INTERNAL LINING
Once all wall modules, floor and roof have been installed, you may install the
HardieFire™ Insulation and the selected James Hardie® internal lining. Ensure to follow the recommended safety work practices specified in the respective
James Hardie product manuals and data sheets as well as any state and code regulations.
After installing HardieFire™ Insulation, the selected James Hardie® lining must be installed in accordance with the current and respective installation guide. Please note that additional fasteners may be required if depending on the bracing value required. Please refer to James Hardie® structural bracing application guide for more information.
with a minimum 5 mm compression along vertical and horizontal edges. Ensure no gaps installed in accordance with respective installation guides
FIGURE 37 HARDIEFIRE
™
LINING LAYOUT
INSULATION AND JAMES HARDIE
®
INTERNAL
WARRANTY
HardieSmart
™
Boundary wall system and HardieSmart
™
ZeroLot wall system have a James Hardie product warranty. The period varies for the selected system components. For terms and conditions of product warranty, refer to www.jameshardie.com.au or www.accel.com.au
CODEMARK CERTIFIED
This product is marked with the CodeMark Scheme Mark of Conformity.
This indicates that the conformity of our product is based upon technical documentation and review of our manufacturing and quality control process to monitor our ability to consistently produce the product in compliance with the requirements of Clauses B1.2 and B1.4 in respect of structural capacity of the walls, A2.3, C1.10, F5.5,J1.2 inter alia J1.5, NTF5.5, QLD J1.2 interalia J1.5 BCA
2009 and BCA 2010, 1.2.3, 3.8.6.2, NT 3.8.6.2, 3.12.1.1 interalia 3.12.1.4, NT
3.12.1.1 interalia 3.12.1.4 BCA 2005 of the BCA.’
HARDIESMART
™
BOUNDARY AND ZEROLOT WALLS – DESIGN GUIDE | PAGE 11 OF 12
Call 13 11 03 for information and advice | jameshardie.com.au
© 2014 James Hardie Australia Pty Ltd ABN 12 084 635 558.
™
and
®
denote a trademark owned by James Hardie Technology Limited. JH_2207-32
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